Android 横向列表GridView 实现横向滚动

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Android 横向列表实现，可左右滑动，如下图

1.主界面布局代码：activity_main.xml

a.包裹HorizontalScrollView控件是GirdView横向滚动的基本条件
b.GirdView外包裹LinearLayout是java代码中参数设置的必要条件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><HorizontalScrollViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_margin="5dp" ><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="fill_parent"android:layout_margin="10dp" ><GridViewandroid:id="@+id/grid"android:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"android:numColumns="auto_fit"android:stretchMode="spacingWidthUniform" ></GridView></LinearLayout></HorizontalScrollView></LinearLayout>

2.主界面GridView列表子项布局文件：list_item.xml

  <span style= "font-size: 14px;" ><?xml version= "1.0"  encoding= "utf-8" ?> 
 <LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android" 
      android:id= "@+id/itemlayout" 
      android:layout_width= "wrap_content" 
      android:layout_height= "wrap_content" 
      android:orientation= "vertical"  > 
      <ImageView 
          android:id= "@+id/ItemImage" 
          android:layout_width= "80.0dip" 
          android:layout_height= "80.0dip" 
          android:layout_gravity= "center_horizontal" 
          android:src= "@drawable/china"  > 
      </ImageView> 
      <TextView 
          android:id= "@+id/tvCity" 
          android:layout_width= "wrap_content" 
          android:layout_height= "wrap_content" 
          android:layout_gravity= "center_horizontal" 
          android:text= "Title" 
          android:textColor= "#000000"  > 
      </TextView> 
      <TextView 
          android:id= "@+id/tvCode" 
          android:layout_width= "wrap_content" 
          android:layout_height= "wrap_content" 
          android:layout_gravity= "center_horizontal" 
          android:text= "Info" 
          android:textColor= "#000000"  > 
      </TextView> 
 </LinearLayout> 
 </span> 
 

3.java实现代码：MainActivity.java

package com.example.horizontallistview;import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;/**** * @author ymw* @summary 博客地址欢迎访问： http://www.cnblogs.com/_ymw*/
public class MainActivity extends Activity {List<CityItem> cityList;RelativeLayout itmel;GridView gridView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);LayoutInflater layoutInflater = (LayoutInflater) this.getSystemService("layout_inflater");gridView = (GridView) findViewById(R.id.grid);setData();setGridView();}/**设置数据*/private void setData() {cityList = new ArrayList<CityItem>();CityItem item = new CityItem();item.setCityName("深圳");item.setCityCode("0755");cityList.add(item);item = new CityItem();item.setCityName("上海");item.setCityCode("021");cityList.add(item);item = new CityItem();item.setCityName("广州");item.setCityCode("020");cityList.add(item);item = new CityItem();item.setCityName("北京");item.setCityCode("010");cityList.add(item);item = new CityItem();item.setCityName("武汉");item.setCityCode("027");cityList.add(item);item = new CityItem();item.setCityName("孝感");item.setCityCode("0712");cityList.add(item);cityList.addAll(cityList);}
    /**设置GirdView参数，绑定数据*/private void setGridView() {int size = cityList.size();int length = 100;DisplayMetrics dm = new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(dm);float density = dm.density;int gridviewWidth = (int) (size * (length + 4) * density);int itemWidth = (int) (length * density);LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT);gridView.setLayoutParams(params); // 设置GirdView布局参数,横向布局的关键gridView.setColumnWidth(itemWidth); // 设置列表项宽gridView.setHorizontalSpacing(5); // 设置列表项水平间距
        gridView.setStretchMode(GridView.NO_STRETCH);gridView.setNumColumns(size); // 设置列数量=列表集合数
GridViewAdapter adapter = new GridViewAdapter(getApplicationContext(),cityList);gridView.setAdapter(adapter);}

    /**GirdView 数据适配器*/public class GridViewAdapter extends BaseAdapter {Context context;List<CityItem> list;public GridViewAdapter(Context _context, List<CityItem> _list) {this.list = _list;this.context = _context;}
@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {LayoutInflater layoutInflater = LayoutInflater.from(context);convertView = layoutInflater.inflate(R.layout.list_item, null);TextView tvCity = (TextView) convertView.findViewById(R.id.tvCity);TextView tvCode = (TextView) convertView.findViewById(R.id.tvCode);CityItem city = list.get(position);tvCity.setText(city.getCityName());tvCode.setText(city.getCityCode());return convertView;}}public class CityItem {private String cityName;private String cityCode;public String getCityName() {return cityName;}public void setCityName(String cityName) {this.cityName = cityName;}public String getCityCode() {return cityCode;}public void setCityCode(String cityCode) {this.cityCode = cityCode;}}
}